Dual phosphorescence from 2,3-naphtho-17-crown-5 ether in ethanol glass at 77 K

被引：11

作者：

Bhattacharyya, S ^{[1
]}

Sousa, LR ^{[1
]}

Ghosh, S ^{[1
]}

机构：

[1] BALL STATE UNIV,DEPT CHEM,MUNCIE,IN 47306

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 269卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(97)00287-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

2,3-naphtho-17-crown-5 ether (I) shows an unusual dual phosphorescence in EtOH and MeOH glass at 77 K as a function of concentration of I. Compound I exhibits, however, single phosphorescence in 2-methyl tetrahydrofuran glass at 77 K in the same concentration range. Crown ethers containing six oxygen atoms do not show any dual phosphorescence at 77 K in EtOH glass in the same concentration range. The lifetime of the T-1 states of the ethers in various matrices and the phosphorescence and the lifetimes of the complexes of I with Tl+, Cs+ and K+ are reported, The blue-shifted emission of I in alcohol glass at 77 K at higher concentration is attributed to emission from a dimer of I having a ground state stabilised compared to that of the monomer of I.

引用

页码：314 / 320

页数：7

共 28 条

[11]

Ghosh S., UNPUB

[12] TRANSANULAR INTERACTION IN [2.2]PHANES - MODELS FOR DIMERS [J].